74HCU04

The 7400 series of chips perform transistor-transistor logic. The 74HCU04 is a "hex unbuffered inverter". It appears on SNES PCBs with coprocessors.

SN74HCU04N

Chip type: 74HCU04

Part #: SN74HCU04N

Manufacturer: Texas Instruments

Date format: YWW xxx xxx

Variables: Full part #, Date code